Comments and Facebook "like" show errors
 

Wordpress 3.0.1
Atahualpa 3.4.9
http://www.maisyspiecompany.com/crumbs

I get an error "400 Bad Request Invalid request." when I click on comments, and an error message when I try to "like" a post. Also, the like button is the same count for each post (if the number goes up in one post it goes up in the other). It only happens on this page. I have it set up as a page (Crumbs) with posts on it. Is this not the way it should be set up?

Problem was resolved when I used default permalinks. I had tried using several different "pretty" ones, but none worked. Is there a suggested permalink structure?

I usually use /%postname%/